Despite ambiguities in reconstructing presuppression fire behavior, there is wide agreement that a century of fire-suppression management has resulted in a large increase of dead and living fuel, increasing the probability of surface fires becoming crown fires of greater areal extent and intensity. That is, "pyrodiversity" has declined from a once wide spectrum over space, time, and intensity. The likely consequence is that biodiversity has declined as well (Martin and Sapsis 1992).
Source: wiktionary